Enantioselective Total Synthesis of the Unnatural and the Natural Stereoisomers of Vittatalactone
作者:Yvonne Schmidt、Konrad Lehr、Ulrich Breuninger、Gabriel Brand、Tomislav Reiss、Bernhard Breit
DOI:10.1021/jo100383u
日期:2010.7.2
of the cucumber beetle. In this context, we developed the asymmetric total synthesis of the aggregation pheromone of A. vittatum, Vittatalactone, to determine its absolute configuration and to further examine the pheromone response in field studies. The synthesis features an enzyme-catalyzed approach toward the deoxypropionate structural motif. A preformed organocopper reagent could then be coupled in
条纹黄瓜甲虫Acalymma vittatum是造成北美葫芦作物严重受损的原因。为了制定对环境无害的植物保护策略,最近的研究集中在鉴定黄瓜甲虫的性信息素。在这种情况下,我们开发了A. vittatum的聚集信息素的不对称全合成,Vittatalactone,以确定其绝对构型,并在野外研究中进一步检查了信息素的反应。合成的特征是通过酶催化的方法实现脱氧丙酸酯的结构基序。预成型有机铜试剂然后可以在被耦合的对映选择性ö -DPPB定向烯丙基取代与官能ö-DPPB-酯。通过这种有效的转化,可以在高度收敛的合成过程中获得维他他内酯。